1,3-dipolar cycloaddition reactions of some 3-aryl-phthalazinium-1-olates

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2001
Dilek, Özlem
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https://hdl.handle.net/11511/10840
Graduate School of Natural and Applied Sciences, Thesis

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1,3-DIPOLAR CYCLOADDITION REACTIONS OF SOME 3-ARYL-PHTHALAZINIUM-1-OLATES
CELEBI, N; Türker, Burhan Lemi (Wiley, 1993-10-01)
The participation of halogen substituted 3-aryl-phthalazinium-1-olates in cycloaddition reactions were stud ed with various olefinic and acetylenic dipolarophiles. The betaines gave the expected cycloadducts with vinyl acetate, vinyl phenyl ether, and vinyl phenyl sulfide. However, two isomeric products were obtained with diethyl acetylenedicarboxylate. One of them was the normal expected cycloadduct and the other one was the rearranged cycloadduct. On the other hand, reactions with phenyl acetylene produc...
1,3-DIPOLAR CYCLOADDITION REACTIONS OF SOME 1-ARYL-PYRIDINIUM-3-OLATES
CELEBI, N; CETINER, O; GULEC, A; Türker, Burhan Lemi (Wiley, 1993-07-01)
In this study, the reactivities of 1-(2,4-dinitrophenyl)-, 1-(4,6-dimethylpyrimidin-2-yl)-, and 1-(5-nitro-2-pyridyl)-pyridinium-3-olates were tested upon various inductively and mesomerically electron rich dipolarophiles. N-substituted pyridinium-3-olates react across the 2,6-positions with 2pi-dipolarophiles whereas 4pi-dipolarophiles added across both 2,6 and 2,4 positions of the betaines.
1,4-didecapentaene-substituted cyclacenes - AM1 treatment
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Austin model I type semi-empirical calculations are performed to calculate various energies and to get some molecular orbital properties of the 1,4-didecapentaene-substituted cyclacenes having 3-8 benzenoid rings. The systems considered should be stable, endothermic and possibly have some non-linear properties.
1,3-Dipolar Cycloaddition Reactions of 1-Methyl-3-Oxidopyridinium Betaine with C-70-A Theoretical Study
Türker, Burhan Lemi; Gumus, Selcuk (American Scientific Publishers, 2009-04-01)
In the present study, the molecular orbital properties of 1,3-dipolar cycloaddition products of 1-methyl-3-oxidopyridinium betaine with C-70 have been investigated theoretically at the level of PM3 (RHF) type semi empirical quantum chemical calculations and then single point DFT calculations were performed for the energies. The betaine acts as a 4 pi-component across its 2,6-positions and certain C=C bonds of C-70 act as 2 pi-component in the 1,3-dipolar cycloadditions considered presently. Various cycloadd...
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Citation Formats
Ö. Dilek, “1,3-dipolar cycloaddition reactions of some 3-aryl-phthalazinium-1-olates,” Middle East Technical University, 2001.
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